/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package Servlet.user;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.ObjectNotFoundException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import server.process.ProcessBeanLocal;

/**
 *
 * @author Hoang
 */
public class login extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String action = request.getParameter("action");
            if (action.equals("Login")) {
                String username = request.getParameter("username");
                String password = request.getParameter("password");
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                try {
                    if (local.checkLogin(username, password)) {
                        RequestDispatcher rd = request.getRequestDispatcher("home.jsp");
                        HttpSession session = request.getSession();
                        session.setAttribute("active", "useractive");
                        session.setAttribute("username", username);
                        session.setAttribute("Name", local.getName(username));
                        rd.forward(request, response);
                    } else {
                        RequestDispatcher rd = request.getRequestDispatcher("index.jsp");
                        request.setAttribute("Error", "User is disable");
                        rd.forward(request, response);
                    }
                } catch (ObjectNotFoundException ex) {
                    Logger.getLogger(login.class.getName()).log(Level.SEVERE, null, ex);
                    RequestDispatcher rd = request.getRequestDispatcher("index.jsp");
                    request.setAttribute("Error", "Login Failed");
                    rd.forward(request, response);
                } catch (RuntimeException ex) {
                    Logger.getLogger(login.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        } catch (NamingException ex) {
            Logger.getLogger(login.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            out.close();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
